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China, Chinese Working Pressure 6000psi 316L 1/4 to 1 Inch Female Thread High-Precision Flow Regulation Capability and High Pressure & Corrosion Resista Needle Valve1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
ValveNeedle Valve6000psi Needle ValveFluit Needble Valve
Hunan Wofly Technology Co., Limited
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Product Description Product ParametersHere's a professional table highlighting the features of High-Purity Gas 316L Needle Valves for New and High-Tech Applications: ParameterDescriptionMaterial- Body/Bonnet: ASTM A182 F316L (low-carbon stainless steel)- Features: Excellent corrosion resistance, low magnetic permeability, and high purity suitable for ultra-high-purity (UHP) gas systems.- Surface treatment: Electropolished (Ra ≤ 0.2μm) to minimize particle retention and outgassing.Purity Level- Meets semiconductor industry standards (e.g., SEMI G45, ASTM G93):- Total hydrocarbon (THC) ≤ 1 ppb- Moisture ≤ 1 ppb- Particulate (≥ 0.2μm) ≤ 1 particle/100 mL- Metal impurities ≤ 1 ppb (each).Design Features- Needle Valve Type: Straight-through or angle pattern with precision-machined needle tip and seat for fine flow control.- Sealing Mechanism: Soft-seal (PTFE/Vespel?) or metal-to-metal seal (for high-temperature/high-pressure applications).- Bonnet Design: Bubble-tight stem seal (double O-ring or bellows seal options for zero leakage).- Connection Types: -compatible tube fittings, VCR? face seals, ISO-K flanges, or NPT threads (polished for UHP use).Operating Conditions- Pressure Range:- Vacuum to 6000 psi (413 bar) (depending on model).- Temperature Range: -40°C to 150°C (PTFE seal); up to 450°C (metal seal).- Flow Control: Turndown ratio ≥ 100:1 for precise metering of micro-flow rates (e.g., 0.1 sccm to 500 slm).Industry Standards- Compliant with:- ASME B16.34 (valve design)- ISO 14644-1 (cleanroom manufacturing)- NACE MR0175 (corrosion resistance for sour gas applications)- USP Class VI (biocompatibility for pharmaceutical gases).Applications- Semiconductor manufacturing (e.g., CVD, etch, PVD processes with gases like Nitrogen TrifluoridSiH).- Analytical instruments (gas chromatography, mass spectrometry ).- High-purity gas distribution systems (UHP Nitrogen, Oxygen, He).- Pharmaceutical and biotech (sterile gas handling).- Aerospace (cryogenic gas control, e.g., LOX, ).Testing & Certification- Leak Testing:- Helium mass spectrometer leak test: ≤ 1×101 atm·cc/s (bubble-tight).- Air pressure test: 1.5× working pressure for 30 minutes.- Cleanliness: Certified cleanroom-washed (ISO Class 5/Class 100) and bagged in polypropylene film.- Documentation: Material traceability report, cleanliness certificate, pressure test report, and RoHS/REACH compliance.Unique Selling Points (USPs)- Ultra-Low Outgassing: Suitable for ultra-high-vacuum (UHV) systems (<10 Torr).- Particle-Free Flow Path: Electropolished internals reduce surface roughness and particle shedding.- High Cycle Life: Rated for ≥50,000 cycles without performance degradation.- Customization: Available with exotic alloys or special coatings (e.g., PFA lining) for aggressive gases.Standards Compliance- CE marked (ATEX for explosive gas environments).- FDA-compliant (for food/medical gases).- GB/T 12241-2005 (valve pressure test methods).Company Profile
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